Articles | Volume 22, issue 19
https://doi.org/10.5194/acp-22-12857-2022
https://doi.org/10.5194/acp-22-12857-2022
Research article
 | 
06 Oct 2022
Research article |  | 06 Oct 2022

Ice fog observed at cirrus temperatures at Dome C, Antarctic Plateau

Étienne Vignon, Lea Raillard, Christophe Genthon, Massimo Del Guasta, Andrew J. Heymsfield, Jean-Baptiste Madeleine, and Alexis Berne

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Short summary
The near-surface atmosphere over the Antarctic Plateau is cold and pristine and resembles to a certain extent the high troposphere where cirrus clouds form. In this study, we use innovative humidity measurements at Concordia Station to study the formation of ice fogs at temperatures <−40°C. We provide observational evidence that ice fogs can form through the homogeneous freezing of solution aerosols, a common nucleation pathway for cirrus clouds.
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